Abstract:
1. Critical thermal maxima (CTmax), critical thermal minima (CTmin) and oxygen consumption rate of four- month-old adult Macrobrachium rosenbergii (38 7 3.1 g) were measured after acclimating to 3 preset temperatures (25 C, 30 C and 35 C) for 30 days. 2. CTmax and CTmin were 40.7370.16 C, 41.0670.17 C, 41.9670.17 C and 14.970.13 C, 15.470.14 C, 16.98+0.21 C, respectively, and were significantly different (po0.05). 3. Rate of oxygen consumption with increasing acclimation temperatures were 2.1170.11, 2.9570.13, 3.3670.11 mg O2 kg1 h1 at three different temperatures and were significantly different (po0.05). 4. The thermal tolerance polygon for the specified temperatures was calculated as 255 C2.
